دورية أكاديمية
أعرض في EDS

Chitosan-thioglycolic acid composite cross-linked with glutaraldehyde for selective recovery of Au(III) ions from e-waste leachate via reduction-coupled adsorption and incineration.

التفاصيل البيبلوغرافية
العنوان: Chitosan-thioglycolic acid composite cross-linked with glutaraldehyde for selective recovery of Au(III) ions from e-waste leachate via reduction-coupled adsorption and incineration.
المؤلفون: James G; Division of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 561-756, Republic of Korea., Tran DT; Division of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 561-756, Republic of Korea., Chaudhuri H; School of Chemical Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 561-756, Republic of Korea., Song MH; School of Chemical Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 561-756, Republic of Korea., Yun YS; Division of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 561-756, Republic of Korea; School of Chemical Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 561-756, Republic of Korea. Electronic address: ysyun@jbnu.ac.kr.
المصدر: Chemosphere [Chemosphere] 2024 Sep; Vol. 364, pp. 143282. Date of Electronic Publication: 2024 Sep 06.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Science Ltd Country of Publication: England NLM ID: 0320657 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1298 (Electronic) Linking ISSN: 00456535 NLM ISO Abbreviation: Chemosphere Subsets: MEDLINE
أسماء مطبوعة: Publication: Oxford : Elsevier Science Ltd
Original Publication: Oxford, New York, : Pergamon Press.
مواضيع طبية MeSH: Chitosan*/chemistry , Gold*/chemistry , Glutaral*/chemistry , Thioglycolates*/chemistry , Electronic Waste* , Water Pollutants, Chemical*/chemistry, Adsorption ; Kinetics ; Hydrogen-Ion Concentration
مستخلص: The recovery of gold (Au) from electronic waste (e-waste) has gained significant attention due to its high Au content and economic feasibility compared to natural ores. This study presents a facile, single-step approach to prepare the chitosan-thioglycolic acid composite crosslinked with glutaraldehyde (CS-TGA-GA) and demonstrates its unique capability for precious metal management, which is a less investigated application area for thiolated chitosan materials. The novel cost-effective biosorbent CS-TGA-GA demonstrated a very high adsorption capacity of 1351.9 ± 96 mg/g and selectivity for Au(III) from an acidic e-waste solution at pH 1 and 298 K. The high adsorption capacity and selectivity of the sorbent can be attributed to the abundance of -NH 2 , -OH, and -SH groups present on its surface. Various characterizations, such as scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffractometry, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy, as well as sorption experiments, including pH, kinetic, and isotherm studies, were performed. The kinetic data align with a pseudo-second-order model and the isotherm data can be well expressed by the Freundlich model. The CS-TGA-GA composite effectively facilitated the conversion of Au(III) to Au(0), leading to the formation of Au nanoparticles that aggregated in the reaction vessel over time. Subsequently, the Au-loaded CS-TGA-GA underwent an incineration procedure, yielding recovered Au with a purity of 99.6%, as measured by X-ray fluorescence. In addition to its large uptake capacity, acid stability, and recyclability, the prepared sorbent showed a highly selective uptake of Au(III) ions in a solution containing various metal ions leached from waste printed circuit boards. These results highlight the potential of CS-TGA-GA as an adsorbent for the recovery of Au from e-waste leachate, thereby contributing to sustainable resource management.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
فهرسة مساهمة: Keywords: Au particles; Biosorbent; Cross-linking; Gold recovery; Reduction-coupled adsorption; Waste printed circuit boards (WPCBs)
المشرفين على المادة: 9012-76-4 (Chitosan)
7440-57-5 (Gold)
T3C89M417N (Glutaral)
0 (Thioglycolates)
0 (Water Pollutants, Chemical)
7857H94KHM (2-mercaptoacetate)
تواريخ الأحداث: Date Created: 20240907 Date Completed: 20240925 Latest Revision: 20240925
رمز التحديث: 20240925
DOI: 10.1016/j.chemosphere.2024.143282
PMID: 39243902
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-1298
DOI:10.1016/j.chemosphere.2024.143282